Falhas do tipo CWE-122

3.189 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2022-0676HIGHHeap-based Buffer Overflow in radareorg/radare2EPSS 1.2%CVE-2024-30074HIGHWindows Link Layer Topology Discovery Protocol Remote Code Execution VulnerabilityEPSS 1.2%CVE-2026-0797HIGHGIMP ICO File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.2%CVE-2026-50696HIGHInternet Key Exchange (IKE) Protocol Denial of Service VulnerabilityEPSS 1.2%CVE-2025-21417HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.2%CVE-2023-0854CRITICALBuffer overflow in NetBIOS QNAME registering and communication process of Office / Small Office Multifunction Printers and Laser Printers(*)EPSS 1.2%CVE-2026-34355HIGHApache HTTP Server: mod_proxy_html buffer overflowEPSS 1.2%CVE-2022-0407MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.2%CVE-2024-33428HIGHBuffer-Overflow vulnerability at conv.c:68 of stsaz phiola v2.0-rc22 allows a remote attacker to execute arbitrary code via the a crafted .wEPSS 1.2%CVE-2025-4355HIGHTenda DAP-1520 api set_ws_action heap-based overflowEPSS 1.2%CVE-2023-0841MEDIUMGPAC reframe_mp3.c mp3_dmx_process heap-based overflowEPSS 1.2%CVE-2021-33485CRITICALCODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.EPSS 1.1%CVE-2022-43591HIGHA buffer overflow vulnerability exists in the QML QtScript Reflect API of Qt Project Qt 6.3.2. A specially-crafted javascript code can triggEPSS 1.1%CVE-2023-0851CRITICALBuffer overflow in CPCA Resource Download process of Office / Small Office Multifunction Printers and Laser Printers(*) which may allow an aEPSS 1.1%CVE-2017-16737—An issue was discovered in WECON Technology LEVI Studio HMI Editor v1.8.29 and prior. A specially-crafted malicious file may be able to causEPSS 1.1%CVE-2025-21186HIGHMicrosoft Access Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-5462HIGHA heap-based buffer overflow in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway beEPSS 1.1%CVE-2023-21560MEDIUMWindows Boot Manager Security Feature Bypass VulnerabilityEPSS 1.1%CVE-2021-21810HIGHA memory corruption vulnerability exists in the XML-parsing ParseAttribs functionality of AT&T Labs’ Xmill 0.7. A specially crafted XML fileEPSS 1.1%CVE-2021-27253HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. AlthougEPSS 1.1%